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Andrej Karpathy walks through the security and privacy tools he personally uses, starting with password managers and hardware keys and moving through email, browsers, search, VPNs, and ad blocking. The core argument is that data brokers and breaches make everyday online habits a real attack surface, so small changes to how you log in, pay, and receive mail pay off a lot.
- Use a password manager with unique passwords everywhere, and protect it with hardware security keys (he recommends YubiKey, buying 2-3 and storing them separately) rather than SMS codes, since SIM swap attacks make phone-number 2FA weak.
- Mint a new virtual credit card per merchant (he uses privacy.com) and use a virtual mail service for your address, so a single leak doesn't link your purchases or expose where you live.
- Avoid smart home devices, which collect data and get hacked often, and switch to Signal, Brave, and Brave Search, paying for a subscription to keep the company's incentives aligned with the user.